<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="addTodoMsg" @keyup.enter="keyUpTodoHandle"/>
  </div>
</template>

<script>
  export default {
    name: "TodoHeader",
    props: ['addTodo'],
    data() {
      return {
        addTodoMsg: ''
      }
    },
    methods: {
      keyUpTodoHandle()
      {
        const addTodoMsg=this.addTodoMsg.trim()
        if(!addTodoMsg){
          alert('请输入内容')
          return
        }
        this.addTodo(addTodoMsg)
      }
    }
  }
</script>

<style scoped>
  /*header*/
  .todo-header input {
    width: 560px;
    height: 28px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 7px;
  }
  
  .todo-header input:focus {
    outline: none;
    border-color: rgba(82, 168, 236, 0.8);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
  }
</style>